I like to edit hard copy because I miss too much on the computer. I never rely on spell/grammar check because, in my experience, they have been incorrect on many occassion. Besides, it’s imperative that I, the writer, know the difference between “our” and “hour”, “who” and “whom”, etc. etc., as well as how to spell correctly. And, I don’t want other people editing my work unless they are somehow vested, i.e. once it is on the way to the publishers.